one is ashland, oregon. >> you're walking? >> yeah. what am i going to do with the baby scooter? this is our neighborhood, and we love it because we can walk everywhere. ashland is a very safe town compared to almost every place else in america. >> narrator: it's a college town, the home of an annual shakespeare festival, where a well-off, educated populace has easy access to alternative organic food co-op and yoga centers. >> go get 'em! >> narrator: jennifer margulis, a writer with a ph.d in english literature, is the mother of four children. >> when my daughter was born in 1999, the nurse bustled in with her tray and said, "okay, it's time for your hepatitis b vaccine." and i looked at my daughter and i looked at the nurse, and i said, "isn't hepatitis b a sexually transmitted disease?" and i said, "why am i supposed to vaccinate my newborn baby against a sexually transmitted disease?" and the nurse got really mad. >> narrator: margulis went on to research and write about vaccines, and, in 2009, published a long article about the vaccine debate in "mothering magazine," a magaz